package Oct_2020.part6;

import java.util.Arrays;
import java.util.Scanner;

public class Pra_Str {
    public static void main(String[] args) {
        Scanner scan=new Scanner(System.in);
        String s=scan.nextLine();
        char[]b=s.toCharArray();
        for (char e :
                b) {
            if (e>'0'&&e<'9') {
                System.out.print(e);
            }
        }
//stringbuffer能够极大提高拼接字符串的效率，缩短时间
        StringBuffer sb=new StringBuffer();
        for (int i=0;i<10000;i++){
            sb.append("欧系给");
        }
        System.out.println(sb.toString());
    }
}
